New desktop won't boot using dedicated GPU

doomslang

Prominent
Oct 25, 2017
3
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510
I just got an HP 6300 Elite tower desktop. It has integrated graphics for vga, but my monitor is not vga. I have a dedicated graphics card that has outputs that support my monitor. My computer will boot, but it is using the integrated graphics therefore I can't see anything. Is there any blindly get it to use dedicated graphics without having to find another monitor/ cable to use to set it up from within windows or BIOS. Is there anyway to do this blindly or on a hardware level? I am assuming no.

Edit:
Grabbed a vga cable to use with the onboard graphics. Nvidia drivers would not install because it says the card (750 ti) is not detected, also there is no option to enable it on BIOS and the option to disable integrated graphics is greyed out.